<?php
/***
* @version $Id: login.php 336 2007-01-23 08:12:56Z flexiondotorg $
* @copyright (c) 2006 - 2007 Flexion.Org
*            (c) 2005 - 2006 {james} < james3785@gmail.com > (Laurence Herbert) http://www.vapour-online.com
*            (c) 2004 - 2005 Project Minerva
*            (c) 2001 - 2006 phpBB Group
* @license   http://opensource.org/licenses/gpl-license.php GNU Public License
***/

//
// Allow people to reach login page if
// board is shut down
//
define('IN_LOGIN', true);
define('IN_R3BORN', true);
$root_path = './';
$phpEx = substr(strrchr(__FILE__, '.'),	1);
include($root_path . 'common.'.$phpEx);

//
// Set page ID for session management
//
$userdata = session_pagestart($user_ip, PAGE_LOGIN);
init_userprefs($userdata);
//
// End session management
//

// session id check
$sid = get_var('sid', '');

if( isset($_POST['login']) || isset($_GET['login']) || isset($_POST['logout']) || isset($_GET['logout']) )
{
	if( ( isset($_POST['login']) || isset($_GET['login']) ) && (!$userdata['session_logged_in'] || isset($_POST['admin'])) )
	{
		$username = isset($_POST['username']) ? r3born_clean_username($_POST['username']) : '';
		$password = isset($_POST['password']) ? $_POST['password'] : '';

		$sql = "SELECT user_id, username, user_password, user_active, user_level, user_login_tries, user_last_login_try
			FROM " . USERS_TABLE . "
			WHERE username = '" . str_replace("\\'", "''", $username) . "'";
		if ( !($result = $db->sql_query($sql)) )
		{
			message_die(GENERAL_ERROR, 'Error in obtaining userdata', '', __LINE__, __FILE__, $sql);
		}

		if( $row = $db->sql_fetchrow($result) )
		{
			if( $row['user_level'] != ADMIN && $config['board_disable'] )
			{
				redirect(append_sid("index.$phpEx", true));
			}
			else
			{
				// If the last login is more than x minutes ago, then reset the login tries/time
				if ($row['user_last_login_try'] && $config['login_reset_time'] && $row['user_last_login_try'] < (time() - ($config['login_reset_time'] * 60)))
				{
					$db->sql_query('UPDATE ' . USERS_TABLE . ' SET user_login_tries = 0, user_last_login_try = 0 WHERE user_id = ' . $row['user_id']);
					$row['user_last_login_try'] = $row['user_login_tries'] = 0;
				}

				// Check to see if user is allowed to login again... if his tries are exceeded
				if ($row['user_last_login_try'] && $config['login_reset_time'] && $config['max_login_attempts'] &&
					$row['user_last_login_try'] >= (time() - ($config['login_reset_time'] * 60)) && $row['user_login_tries'] >= $config['max_login_attempts'] && $userdata['user_level'] != ADMIN)
				{
					message_die(GENERAL_MESSAGE, sprintf($lang['Login_attempts_exceeded'], $config['max_login_attempts'], $config['login_reset_time']));
				}

				if( md5($password) == $row['user_password'] && $row['user_active'] )
				{
					$autologin = ( isset($_POST['autologin']) ) ? TRUE : 0;
### R3-born - ADD ('Olympus Style' Login Screen)
#
					$hideonlinestatus = ( isset($_POST['hideonline']) ) ? 0 : 1;
#
### R3-born - END ADD

					$admin = (isset($_POST['admin'])) ? 1 : 0;
					$session_id = session_begin($row['user_id'], $user_ip, PAGE_INDEX, FALSE, $autologin, $admin);

					// Reset login tries
					$db->sql_query('UPDATE ' . USERS_TABLE . ' SET user_login_tries = 0, user_last_login_try = 0 WHERE user_id = ' . $row['user_id']);

### R3-born - ADD ('Olympus Style' Login Screen)
#
                  if(!isset($_POST['admin']))
                  {
						$sql = "UPDATE " . USERS_TABLE . " SET user_allow_viewonline = " . $hideonlinestatus . " WHERE user_id = " . $row['user_id'];
                  		if ( !( $result = $db->sql_query( $sql ) ) )
                  		{
                     		message_die(GENERAL_ERROR, 'Error in updating online status', '', __LINE__, __FILE__, $sql);
                  		}

						$url = get_var('redirect', '');

						if ($url != '')
						{
							//$url = (!empty($_POST['redirect'])) ? htmlspecialchars($_POST['redirect']) : htmlspecialchars($_GET['redirect']);
							$url = str_replace('&amp;', '&', $url);
							$url = str_replace("\'", "", $url);

							if (strstr(urldecode($url), "\n") || strstr(urldecode($url), "\r"))
							{
								message_die(GENERAL_ERROR, 'Tried to redirect to potentially insecure url.');
							}
							$message = $lang['login_LoggedIn'] . '<br /><br />' . sprintf($lang['login_Click_return'], '<a href="' . append_sid( $url ) . '">', '</a>') . '<br /><br />' .  sprintf($lang['Click_return_index'], '<a href="' . append_sid("index.$phpEx") . '">', '</a>');
						}
						else
						{
							$message = $lang['login_LoggedIn'] . '<br /><br />' . sprintf($lang['Click_return_index'], '<a href="' . append_sid("index.$phpEx") . '">', '</a>');
						}

						$template->assign_vars(array(
							'META' => '<meta http-equiv="refresh" content="3;url=' . $url . '">')
						);

						message_die(GENERAL_MESSAGE, $message);
				   }
#
### R3-born - END ADD

					if( $session_id )
					{
						$url = ( !empty($_POST['redirect']) ) ? str_replace('&amp;', '&', htmlspecialchars($_POST['redirect'])) : "index.$phpEx";
						redirect(append_sid($url, true));
					}
					else
					{
						message_die(CRITICAL_ERROR, "Couldn't start session : login", "", __LINE__, __FILE__);
					}
				}
### R3-born - ADD ('Olympus Style' Login Screen)
#
            	else if ( md5($password) == $row['user_password'] && !$row['user_active'] )
            	{
               		$template->assign_vars(array(
                  		'META' => '<meta http-equiv="refresh" content="3;url=' . append_sid("register.$phpEx?mode=resendactivation") . '">')
               			);
               		$message = $lang['login_InactiveAccount'] . '<br /><br />' . sprintf($lang['login_ActivateAccountMsg'], '<a href="' . append_sid("register.$phpEx?mode=resendactivation") . '">', '</a>') . '<br /><br />' .  sprintf($lang['Click_return_login'], '<a href="' . append_sid("login.$phpEx") . '">', '</a>');
               		message_die(GENERAL_MESSAGE, $message);
            	}
#
### R3-born - END ADD

				// Only store a failed login attempt for an active user - inactive users can't login even with a correct password
				elseif( $row['user_active'] )
				{
					// Save login tries and last login
					if ($row['user_id'] != ANONYMOUS)
					{
						$sql = 'UPDATE ' . USERS_TABLE . '
							SET user_login_tries = user_login_tries + 1, user_last_login_try = ' . time() . '
							WHERE user_id = ' . $row['user_id'];
						$db->sql_query($sql);
					}
				}

				$redirect = ( !empty($_POST['redirect']) ) ? str_replace('&amp;', '&', htmlspecialchars($_POST['redirect'])) : '';
				$redirect = str_replace('?', '&', $redirect);

				//if (strstr(urldecode($redirect), "\n") || strstr(urldecode($redirect), "\r"))
				if (strstr(urldecode($redirect), "\n") || strstr(urldecode($redirect), "\r") || strstr(urldecode($redirect), ';url'))
				{
					message_die(GENERAL_ERROR, 'Tried to redirect to potentially insecure url.');
				}

				$template->assign_vars(array(
					'META' => "<meta http-equiv=\"refresh\" content=\"3;url=login.$phpEx?redirect=$redirect\">")
				);

### R3-born - CHANGE ('Olympus Style' Login Screen )
#
//			   $message = $lang['Error_login'] . '<br /><br />' . sprintf($lang['Click_return_login'], "<a href=\"login.$phpEx?redirect=$redirect\">", '</a>') . '<br /><br />' .  sprintf($lang['Click_return_index'], '<a href="' . append_sid("index.$phpEx") . '">', '</a>');

               $message = $lang['login_WrongPassword'] . '<br /><br />' . sprintf($lang['login_SendPasswordMsg'], '<a href="' . append_sid("register.$phpEx?mode=sendpassword") . '">', '</a>') . '<br /><br />' .  sprintf($lang['Click_return_login'], '<a href="' . append_sid("login.$phpEx") . '">', '</a>');
#
### R3-born - END CHANGE

				message_die(GENERAL_MESSAGE, $message);
			}
		}
		else
		{
			$redirect = ( !empty($_POST['redirect']) ) ? str_replace('&amp;', '&', htmlspecialchars($_POST['redirect'])) : "";
			$redirect = str_replace("?", "&", $redirect);

			//if (strstr(urldecode($redirect), "\n") || strstr(urldecode($redirect), "\r"))
			if (strstr(urldecode($redirect), "\n") || strstr(urldecode($redirect), "\r") || strstr(urldecode($redirect), ';url'))
			{
				message_die(GENERAL_ERROR, 'Tried to redirect to potentially insecure url.');
			}

			$template->assign_vars(array(
				'META' => "<meta http-equiv=\"refresh\" content=\"3;url=login.$phpEx?redirect=$redirect\">")
			);
### R3-born - CHANGE ('Olympus Style' Login Screen )
#
//			$message = $lang['Error_login'] . '<br /><br />' . sprintf($lang['Click_return_login'], "<a href=\"login.$phpEx?redirect=$redirect\">", '</a>') . '<br /><br />' .  sprintf($lang['Click_return_index'], '<a href="' . append_sid("index.$phpEx") . '">', '</a>');

         	$message = $lang['login_NoAccount'] . '<br /><br />' . sprintf($lang['login_RegisterAccountMsg'], "<a href=\"register.$phpEx\">", '</a>') . '<br /><br />' .  sprintf($lang['Click_return_login'], '<a href="' . append_sid("login.$phpEx") . '">', '</a>');
#
### R3-born - END CHANGE

			message_die(GENERAL_MESSAGE, $message);
		}
	}
	else if( ( isset($_GET['logout']) || isset($_POST['logout']) ) && $userdata['session_logged_in'] )
	{
		// session id check
		if ($sid == '' || $sid != $userdata['session_id'])
		{
			message_die(GENERAL_ERROR, 'Invalid_session');
		}

		if( $userdata['session_logged_in'] )
		{
			session_end($userdata['session_id'], $userdata['user_id']);
		}

		if (!empty($_POST['redirect']) || !empty($_GET['redirect']))
		{
			$url = (!empty($_POST['redirect'])) ? htmlspecialchars($_POST['redirect']) : htmlspecialchars($_GET['redirect']);
			$url = str_replace('&amp;', '&', $url);
			redirect(append_sid($url, true));
		}
		else
		{
			redirect(append_sid("index.$phpEx", true));
		}
	}
	else
	{
		$url = ( !empty($_POST['redirect']) ) ? str_replace('&amp;', '&', htmlspecialchars($_POST['redirect'])) : "index.$phpEx";
		redirect(append_sid($url, true));
	}
}
else
{
	//
	// Do a full login page dohickey if
	// user not already logged in
	//

### R3-born - REMOVE (Original Code)
#
//	if( !$userdata['session_logged_in'] || (isset($_GET['admin']) && $userdata['session_logged_in'] && $userdata['user_level'] == ADMIN))
#
### R3-born - END REMOVE

### R3-born - ADD (Jnr. Admin)
#
	$jr_admin_userdata = jr_admin_get_user_info($userdata['user_id']);
	if( !$userdata['session_logged_in'] || (isset($_GET['admin']) && $userdata['session_logged_in'] && $userdata['user_level'] == ADMIN || $jr_admin_userdata))
#
### R3-born - END ADD

	{
		page_header($lang['Login']);

		$template->set_filenames(array(
			'body' => 'login_body.tpl')
		);

		$forward_page = '';

		if( isset($_POST['redirect']) || isset($_GET['redirect']) )
		{
			$forward_to = $_SERVER['QUERY_STRING'];

			if( preg_match("/^redirect=([a-z0-9\.#\/\?&=\+\-_]+)/si", $forward_to, $forward_matches) )
			{
				$forward_to = ( !empty($forward_matches[3]) ) ? $forward_matches[3] : $forward_matches[1];
				$forward_match = explode('&', $forward_to);

				if(count($forward_match) > 1)
				{
					for($i = 1; $i < count($forward_match); $i++)
					{
						if( !ereg("sid=", $forward_match[$i]) )
						{
							if( $forward_page != '' )
							{
								$forward_page .= '&';
							}
							$forward_page .= $forward_match[$i];
						}
					}
					$forward_page = $forward_match[0] . '?' . $forward_page;
				}
				else
				{
					$forward_page = $forward_match[0];
				}
			}
		}

		$username = ( $userdata['user_id'] != ANONYMOUS ) ? $userdata['username'] : '';

		$s_hidden_fields = '<input type="hidden" name="redirect" value="' . $forward_page . '" />';
		$s_hidden_fields .= (isset($_GET['admin'])) ? '<input type="hidden" name="admin" value="1" />' : '';

		$template->assign_vars(array(
			'USERNAME' => $username,

			'L_ENTER_PASSWORD' => (isset($_GET['admin'])) ? $lang['Admin_reauthenticate'] : $lang['Enter_password'],
			'L_SEND_PASSWORD' => $lang['Forgotten_password'],
### R3-born - ADD ('Olympus Style' Login Screen)
#
			'L_OL_REGISTER' => $lang['login_CreateAccount'],
			'L_OL_INFOLOGIN' => $lang['login_LoginInfo'],
			'L_OL_READHELP' => $lang['login_ViewHelp'],
			'L_OL_INFOADMIN' => $lang['login_AdminInfo'],
			'L_OL_ACTIVATION' => $lang['login_Resend_Activation'],
			'L_OL_HIDEONLINESTATUS' => $lang['login_HideOnlineSession'],
			'L_OL_OPTIONS' => $lang['Options'],

			'U_OL_ACTIVATION' => append_sid("register.$phpEx?mode=resendactivation"),
#
### R3-born - END ADD

			'U_SEND_PASSWORD' => append_sid("register.$phpEx?mode=sendpassword"),

			'S_HIDDEN_FIELDS' => $s_hidden_fields)
		);

### R3-born - ADD ('Olympus Style' Login Screen)
#
		if( isset( $_GET['admin'] ) )
		{
			$template->assign_block_vars('switch_admin_reauth', array());
		}

		if($config['require_activation'] !== USER_ACTIVATION_ADMIN && !$userdata['session_logged_in'])
		{
				$template->assign_block_vars('switch_resend_activation', array());
		}
#
### R3-born - END ADD

		$template->pparse('body');

		page_footer();
	}
	else
	{
		redirect(append_sid("index.$phpEx", true));
	}

}

?>